format headers

We move `tmp/format-headers.sh` into `bin/format-headers.sh`.

We also add a few missing empty lines to `README.md`.

We add `bin/format-headers.sh` to the `bin/README.md`.

We run `bin/format-headers.sh` to perform the above.

Performed `make www` to accomplish the above and to test under macOS.

1990/jaw/README.md

@@ -4,6 +4,7 @@
     make all
 ```
 
+
 ### Bugs and (Mis)features:
 
 The current status of this entry is:

1990/westley/README.md

@@ -18,7 +18,6 @@ The current status of this entry is:
 For more detailed information see [1990/westley in bugs.html](../../bugs.html#1990_westley).
 
 
-
 ## To use:
 
 ``` <!---sh-->